公开(公告)号：US20110216641A1

公开(公告)日：2011-09-08

申请号：US12856734

申请日：2010-08-16

申请人： Jun HATO ,  Akio YABE ,  Kazuhiro TODORI ,  Daisuke TOMITA

发明人： Jun HATO ,  Akio YABE ,  Kazuhiro TODORI ,  Daisuke TOMITA

IPC分类号： G11B7/135

CPC分类号： G11B7/135

摘要： In an optical pick-up used in common with DVD/CD and BD, when the thickness is intended to be reduced by mounting a total reflection mirror, a cavity for passing through a laser light is necessary and, since this decreases the degree of freedom for arranging tracking coils and magnets and secondary resonance caused by a magnetic thrust in the tracking direction tends to be generated, an improvement therefor is necessary. In a lens coil holder of the optical pick-up having an objective lens and tracking coil mounted thereon each of the coils is arranged such that the thrust relative to the vertical center of the suspension wires that support the lens coil holder is well balanced. For example, most of the portion of the tracking coils is situated at one height relative to the suspension wire and the tilt coil is situated at the other remaining height.

摘要翻译： 在与DVD / CD和BD共同使用的光学拾取器中，当通过安装全反射镜来减小厚度时，需要用于穿过激光的空腔，并且因为这降低了自由度 为了排列跟踪线圈和磁体，并且倾向于产生由跟踪方向上的磁推力引起的二次谐振，因此需要进行改进。 在具有安装在其上的每个线圈的物镜和跟踪线圈的光学拾取器的透镜线圈保持器被布置成使得相对于支撑透镜线圈架的悬挂线的竖直中心的推力平衡良好。 例如，跟踪线圈的大部分位于相对于悬挂线的一个高度处，并且倾斜线圈位于另一个剩余高度。

公开(公告)号：US20120260273A1

公开(公告)日：2012-10-11

申请号：US13435665

申请日：2012-03-30

申请人： Yasushi KINOSHITA ,  Jun HATO ,  Kazuhiro TODORI

发明人： Yasushi KINOSHITA ,  Jun HATO ,  Kazuhiro TODORI

IPC分类号： G11B7/00

CPC分类号： G11B7/1376 ,  G11B7/22

摘要： An optical pickup includes a lens moving mechanism constructed of a lens, a lens holder holding the lens, a guide member guiding the lens holder, a lead screw including a thread groove, a motor rotating the lead screw, and a rack gear including a body fixed to the lens holder and claws fitted into the thread groove of the lead screw, in which an arm connecting the body and the claws of the rack gear is formed so that the shape of a cross section perpendicular to the rotational axis direction of the lead screw is a convex shape, a recess shape or a wave-shape.

摘要翻译： 光学拾取器包括透镜移动机构，透镜移动机构，保持透镜的透镜夹持器，引导透镜保持器的引导构件，包括螺纹槽的导螺杆，旋转导螺杆的马达和包括主体的齿条 固定在透镜保持架上，并装配在导螺杆的螺纹槽中的爪，其中连接主体和齿条的爪的臂形成为与引线的旋转轴线方向垂直的截面形状 螺丝是凸形，凹形或波形。

公开(公告)号：US20120127845A1

公开(公告)日：2012-05-24

申请号：US13218786

申请日：2011-08-26

申请人： Katsuhiko KIMURA ,  Jun HATO ,  Zhi Yan GAO

发明人： Katsuhiko KIMURA ,  Jun HATO ,  Zhi Yan GAO

IPC分类号： G11B7/135

CPC分类号： G11B7/0935 ,  G11B7/0932 ,  G11B7/1374

摘要： An optical pickup includes an objective lens, a lens holder which holds the objective lens, a focusing coil attached to the lens holder having the winding axis directed at the optical axis of the objective lens, and a magnet provided opposite the side surface of the lens holder. A protruding portion is attached to the side surface of the lens holder at a side apart from the objective lens with respect to the optical axis direction of the objective lens farther than the focusing coil.

摘要翻译： 光学拾取器包括物镜，保持物镜的透镜保持器，附接到具有指向物镜的光轴的卷绕轴的透镜保持器的聚焦线圈和与透镜的侧表面相对设置的磁体 持有人 相对于比聚焦线圈更远的物镜的光轴方向，突出部分在透镜保持器的与物镜相离的一侧附着。

公开(公告)号：US20120297403A1

公开(公告)日：2012-11-22

申请号：US13430831

申请日：2012-03-27

申请人： Katsuhiko KIMURA ,  Jun HATO ,  Zhiyan GAO

发明人： Katsuhiko KIMURA ,  Jun HATO ,  Zhiyan GAO

IPC分类号： G11B7/09

CPC分类号： G11B7/0935 ,  G11B7/0956

摘要： An optical pickup whose thickness is small and power consumption is low is provided, in which these advantages are achieved by increasing the driving force generated in the tilt coil in an objective lens driving apparatus and by making the thickness of the objective lens driving apparatus to be small.In an optical pickup including: an objective lens for condensing light onto an optical disc; a lens holder to which the objective lens has been attached; a focusing coli, a tracking coil, and a tilt coil, which have been attached to the lens holder; and a reflection mirror for reflecting light toward the optical axis of the objective lens, the tilt coil is made to have a shape in which the tilt coil is not brought into contact with the side of the reflection mirror, the side being near to the objective lens.

摘要翻译： 提供了一种厚度小且功耗低的光学拾取器，其中通过增加在物镜驱动装置中的倾斜线圈中产生的驱动力并且通过使物镜驱动装置的厚度为 小。 一种光学拾取器，包括：将光聚光到光盘上的物镜; 已经安装了物镜的透镜架; 聚焦大肠杆菌，跟踪线圈和倾斜线圈，其已经附接到透镜保持器; 以及反射镜，用于朝向物镜的光轴反射光，使倾斜线圈具有其中倾斜线圈不与反射镜侧接触的形状，该侧靠近物镜 镜片。

公开(公告)号：US20090103421A1

公开(公告)日：2009-04-23

申请号：US12255077

申请日：2008-10-21

申请人： Yoshihiro SATOU ,  Hidenao SAITO ,  Jun HATO ,  Ryuichiro MIZUNO ,  Katsuhiko KIMURA

发明人： Yoshihiro SATOU ,  Hidenao SAITO ,  Jun HATO ,  Ryuichiro MIZUNO ,  Katsuhiko KIMURA

IPC分类号： G11B7/135

CPC分类号： G11B7/0956 ,  G11B7/0932 ,  G11B7/0935

摘要： The present invention provides an object lens actuator, an optical pickup, and an optical disk drive, which can increase the size of the object lens actuator driving a lens holder in the tangential tilt direction, and drive and control the lens holder with a small amount of drive current.An object lens actuator comprising a lens holder having an object lens and a first coil; a first magnet fixed to a yoke; plural elastic support parts for supporting said lens holder with a first fulcrum; a moving part for supporting said elastic support parts with a second fulcrum different from said first fulcrum, and a fixed part having a moving mechanism for moving said moving part, wherein said first coil and said first magnet constitute a first magnetic circuit, said first magnetic circuit makes said lens holder movable in a focusing direction, a tracking direction and a radial tilt direction of an optical disk for read/write, and said moving mechanism makes said moving part movable.

摘要翻译： 本发明提供一种物镜驱动器，光拾取器和光盘驱动器，其可以增加沿切线倾斜方向驱动透镜保持器的物镜致动器的尺寸，并且以少量驱动和控制透镜保持器 的驱动电流。 一种物镜致动器，包括具有物镜和第一线圈的透镜保持器; 固定到轭的第一磁体; 用于以第一支点支撑所述透镜支架的多个弹性支撑部件; 用于以不同于所述第一支点的第二支点支撑所述弹性支撑部分的移动部分和具有用于移动所述移动部件的移动机构的固定部分，其中所述第一线圈和所述第一磁体构成第一磁路，所述第一磁体 电路使得所述透镜架能够在用于读/写的光盘的聚焦方向，跟踪方向和径向倾斜方向上移动，并且所述移动机构使得所述移动部件可移动。